Inside Handle Illumination Light Circuit: Procedure

1. When a door is opened, check that the following inside handle illumination lights illuminate.

   Result

   Result	Proceed to
   Inside handle illumination (front LH) does not illuminate	A
   Inside handle illumination (front RH) does not illuminate	B
   Inside handle illumination (rear LH) does not illuminate	C
   Inside handle illumination (rear RH) does not illuminate	D

D → See step   11 

C → See step   8 

B → See step   5 

A: Go to next step 

1. Select the ACTIVE TEST, use the Techstream to generate a control command, and then check that the inside handle illumination light illuminates.
   DRIVER DOOR (MULTIPLEX NETWORK DOOR ECU FRONT LH)
   
   

   Item	Test Details	Diagnostic Note
   Inside Handle Illumination	Inside handle illumination ON / OFF	-

   OK

   Light illuminates.

NG → See step   3 

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

1. Temporarily replace the inside handle illumination (front LH) with a new or normally functioning one.
2. Check that the illumination light illuminates.

   OK

   Inside handle illumination light illuminates.

OK → END 

NG: Go to next step 

1. Disconnect the M9 ECU connector.
   Fig 1: Identifying M9 ECU Connector And Q9 Light Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the Q9 light connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   M9-14 (LED+) - Q9-1	Below 1 Ω
   M9-13 (LED-) - Q9-2	Below 1 Ω
   M9-14 (LED+) or Q9-1 - Body ground	10 kΩ or higher
   M9-13 (LED-) or Q9-2 - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

1. Select the ACTIVE TEST, use the Techstream to generate a control command, and then check that the inside handle illumination light illuminates.

   Passenger Door (Multiplex network door ECU front RH)

   Item	Test Details	Diagnostic Note
   Inside Handle Illumination	Inside handle illumination ON / OFF	-

   OK

   Light illuminates.

NG → See step   6 

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

1. Temporarily replace the inside handle illumination (front RH) with a new or normally functioning one.
2. Check that the illumination light illuminates.

   OK

   Inside handle illumination light illuminates.

OK → END 

NG: Go to next step 

1. Disconnect the M4 ECU connector.
   Fig 2: Identifying M4 ECU Connector And Q1 Light Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the Q1 light connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   M4-14 (LED+) - Q1-1	Below 1 Ω
   M4-13 (LED-) - Q1-2	Below 1 Ω
   M4-14 (LED+) or Q1-1 - Body ground	10 kΩ or higher
   M4-13 (LED-) or Q1-2 - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

1. Select the ACTIVE TEST, use the Techstream to generate a control command, and then check that the inside handle illumination light illuminates.
   REAR LEFT DOOR (MULTIPLEX NETWORK DOOR ECU REAR LH)
   
   

   Item	Test Details	Diagnostic Note
   Inside Handle Illumination	Inside handle illumination ON / OFF	-

   OK

   Light illuminates.

NG → See step   9 

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

1. Temporarily replace the inside handle illumination (rear LH) with a new or normally functioning one.
2. Check that the illumination light illuminates.

   OK

   Inside handle illumination light illuminates.

OK → END 

NG: Go to next step 

1. Disconnect the O7 ECU connector.
   Fig 3: Identifying O7 ECU Connector And S7 Light Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the S7 light connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   O7-14 (LED+) - S7-1	Below 1 Ω
   O7-13 (LED-) - S7-2	Below 1 Ω
   O7-14 (LED+) or S7-1 - Body ground	10 kΩ or higher
   O7-13 (LED-) or S7-2 - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

1. Select the ACTIVE TEST, use the Techstream to generate a control command, and then check that the inside handle illumination light illuminates.
   REAR RIGHT DOOR (MULTIPLEX NETWORK DOOR ECU REAR RH)
   
   

   Item	Test Details	Diagnostic Note
   Inside Handle Illumination	Inside handle illumination ON / OFF	-

   OK

   Light illuminates.

NG → See step   12 

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

1. Temporarily replace the inside handle illumination (rear RH) with a new or normally functioning one.
2. Check that the illumination light illuminates.

   OK

   Inside handle illumination light illuminates.

OK → END 

NG: Go to next step 

1. Disconnect the O3 ECU connector.
   Fig 4: Identifying O3 ECU Connector And S3 Light Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the S3 light connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   O3-14 (LED+) - S3-1	Below 1 Ω
   O3-13 (LED-) - S3-2	Below 1 Ω
   O3-14 (LED+) or S3-1 - Body ground	10 kΩ or higher
   O3-13 (LED-) or S3-2 - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE